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Compiler Error C2971

'class' : template argument 'parameter' : invalid use of local variable 'variable' as non-type argument

You cannot use the name or address of a local variable as a template argument.

The following sample generates C2971:

template <int *pi> class Y {
};

int global_var = 0;

void main() {
   int local_var = 0;

   Y<&local_var> aY;   // C2971   

   // use the code below to resolve the error
   // Y<&global_var> aY;
}